We keep on introducing Mike’s functions. This time there are a couple of
Python methods that we haven’t seen here and need some introduction,
izip
and count
. To use these two we also need to import new modules
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count
returns consecutive integers starting at a
defined point (the method’s parameter). If empty it starts from zero.
Basically, by starting a count
it will give an iterable with a
increasing integer values, in a fashion similar to a function with
yield. Every time our loop accesses the count
it will “remember” the
last return value and increment it by one. izip
also returns an
iterator, but from a list of iterables. It is basically used to iterate
through a list of many iterables at the same time. In the function below
it is used twice: one to generate a tuple (with count
) with a sequence
number and the sequence itself. The sequence in the tuple is then used
in another izip
to create the windows on the sequences to count
motifs.
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In the next couple of posts we still be checking motif quorum functions. Stay tuned.